Looping floor device



NOV. 21, 1933 D wR|GHT LOOPING FLOOR DEVICE Filed Feb. 20, 1932 Patented Nov. 21, 1933 LUNlTED :STATES PATENT- OFFICE 1,935,757 LooPrNG FLOOR DEVICE, Earl D. Wright, Chicago, Ill.

. Application February 20, 1932. Serial No. 594,299 3 Claims. (01. 80-52) The invention relates to'new and useful improvements for rolling metallic shapes and particularlyto means for avoidingmechanical defects on certain mill products; a

The rigid requirement of the trade for perfect metallic shapes free from all mechanical defects has made it necessary to devise machinery and methods wherever possible to reduce to the minimum the chance of producing such defects. The rolling of certain mill products is usually done on what is known as a looping mill whereinroll stands are set in such a position that the rolled bars aretaken from the delivery side of one set of rolls and entered into the next set either by a workman using hand tongs or by means of a mechanical repeater. In order to allow for proper delivery from one stand and entry into the other and to avoid undue stresses the roll speeds are regulated to allow a loop of the rolled bar to form between stands. In order to keep the loop as nearly uniform in length as possible and to avoid knotting heretofore a device has been fastened to the looping floor between the roll stands known as a turtle back guide. At present this guide consists simply of a casting with a rounded face over which the rolled bar is looped in passing from one stand to the other and in operation as the rear end of the bar leaving the preceding pass is pulled into the forward pass certain tensions are produced in the bar as friction between the bar and the guide occurs, also causing at times some stretching and a considerable amount of scratching of the hot rolled bar.

The present invention has for its object to provide means for avoiding defects in metallic shapes as they are looped in travelling from the delivery side of one set of rolls to the entering side of the next set. 7

With these and various other objects in view, the invention may consist of certain novel features of construction and operation as will be more fully described and particularly pointed out in the specification, drawing and claims appended hereto.

In the drawing which illustrates an embodiment of the device and wherein like reference characters are used to designate like parts- Figure 1 is a diagrammatic illustration of a rolling mill, the same including a looping floor equipped with the present invention;

Figure 2 is an enlarged plan elevation of the roller guide assembly of the present invention, and

Figure 3 is a vertical sectional view taken substantially on the plane indicated by line 3-3 of Figure 2.

The rolling mill shown in Figure 1 includes a number of sets of rolls designated 10, 12, 14, etc., positioned in alignment forming successive passes for rolling the metallic shapes. The bars delivered from the furnace 24 are of considerable thickness and are first reduced in thickness with corresponding elongation in length by reason of the rolls 10 to 16 inclusive, whereupon the direction of travel of the bar is reversed, being caused topass between the rolls forming the roll stands 18. Continued rolling of the bar is accomplished by the roll stands 20 and 22 until the bar is of such thickness that the same can 0 be looped, the bar emerging from the roll stand 26 and entering the roll stand 28, being looped around the roller guide member 30 so that the bar does not bodily reverse its general motion between successive passes.

In order to facilitate the travel of the metallic shapes through the looping mill the present invention provides a roller guide wheel 32, Figures Associated with the rotating wheel and posi- I tioned immediately adjacent the same is a roller guide front piece designated 37 comprising a rectangular plate having one end 38 suitably secured to the looping mill floor and terminating in substantial alignment with the surface of the floor. The other end of the front piece is formed of an arcuate shape and is so positioned by means of securing bolts 40 as to provide a'continuation for the flange 33 of the guide wheel, the :arcuate shape of the front piece locating the entire width of the same adjacent the flange. The plate 37 is positioned to the back side of the guide wheel as will be clearly understood by reference to Figure 1 and forms means whereby the metallic shapes can be elevated to the height of the wheel and in efiect looped around the guide wheel so that during a rolling operation the shapes will engage the concaved face 42. The flange 33 formed on the guide wheel provides retaining means for the metallic shapes, maintaining the same in engagement with the arcuate positioned between successive passes and as the roller freely rotates with the travel of the rolled shapes scratching of their surface is prevented as the hot steel comes in contact with moving surfaces in rolling friction instead of contacting stationary surfaces under sliding friction as was heretofore the case. Also the present construction of guide prevents untrue sections in the rolled shapes as stretching of the same is practically eliminated. In addition the construction of the guide wheel is such as to provide a safety measure retaining the rolled shapes in engagement with the concave surface preventing the occurrence of twists or knots in flat sections.

It is to be understood that I do not wish to be limited by the exact embodiment of the device shown which is merely by way of illustration and not limitation, as various and other-forms of the device will of course be apparent to those skilled in the art without departing from the spirit of the invention or the scope'ofthe claims.

I claim:

. 1. In a looping mill, in combination with successive roll stands, of means including a roller guide positioned to one side of said stands and providing a contacting surface for the loop formed. in the rolled shape confined between the stands, said roller guide being mounted for rotation in a horizontal. plane and having a concave periphery merging into a top projecting flange,

said concave periphery and flange maintaining the metal between the flange and the floor of the looping mill, and means sloping from the flange to the floor and positioned to that side of the roller guide facing the roll stands.

2. In a looping mill, in combination with successive roll stands, of a roller guide positioned to one side of said stands, said roller guide having a concave periphery providing a contacting surface for the loop formed in the rolled shape confined between the stands, means rotatably mounting said roller guide, a retaining flange formed on the said roller guide, and a member located to one side thereof and providing a con,-

. tinuation of the upper surface of the flange, said member sloping downwardly to the floor.

3. In a looping mill, in combination with successive roll stands, of a roller guide positioned to one side of said stands, said roller guide having a concave periphery providing a contacting surface for the loop formed in the rolled shape confined between the stands, means including an upright shaft secured to the floor of the mill for rotatably mounting said roller and locating the same immediately adjacent the floor, a retaining flange on the guide integral with the upper surface thereof and projecting outwardly of the concave periphery, and a member positioned to one side of the roller guide and having a concave face for association with the roller, the upper surface of the member providing a continuation of the flange and said member sloping downwardly to the floor.

EARL D. WRIGHT. 

